objection to(接动名词)反对
on occasion(=now and then)不时地，必要时
by occasion of(=because of)由于
occupy oneself with(in)忙于(某事)
it occurs to sb. that… 某人想到…
once and for all=once and forever 永远地；all at once(=suddenly，now)立即，马上；once in a while (=occasionally)偶尔；(just)for once 就这一次
(all)by oneself 独自(没有别人帮助)
operate on sb. 给某人做手术；come go into operation 开始运转；put bring sth. into operation 使…投产，运转
be of the opinion 持有…的看法
in one’s opinion 按某人的看法
be opposed to… 反 对 …
be opposite to 与…相反的
(be)in order(=acceptable)合适的，恰当的;in order 井井有条，处于良好状态;out of order(=in bad condition)出毛病，发生故障
made to order 定做的(衣服)
originate in from(=begin)起源于，由..引起
